<template>
  <view class="cart-container" v-if="cart.lenght !== 0">
    <!-- 收获地址组件 -->
    <my-address></my-address>
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    
    
    <!-- 循环渲染购物车上的商品 -->
    <uni-swipe-action>
      
      <block v-for="(goods,i) in cart" :key="i">
      <uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
      
        <my-goods :item="goods" :showRadio="true" @radio-change="radioChangeHandler" :showNum="true" @num-change="numChangeHandler">
          
          </my-goods>
       
      </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 使用自定义结算组件 -->
    <my-settle></my-settle>
  </view>
  
  
  <!-- 这是空白购物车的区域 -->
 <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也</text>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import { mapState,mapMutations } from 'vuex'
  export default {
    mixins:[badgeMix],
    data() {
      return {
        options:[{
          text:'删除',
          style:{
            backgroundColor :"#C00000"
          }
        }]
      };
    },
    computed:{
      ...mapState('m_cart',['cart']),
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      radioChangeHandler(e){
        // console.log(e);
        this.updateGoodsState(e)
      },
      numChangeHandler(e){
        this.updateGoodsCount(e)
      },
      swipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    },
    watch:{
      total(){
        this.setBadge()
      }
    }
  }
</script>

<style lang="scss">
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
  }
}
.cart-container{
  padding-bottom: 50px;
}

.empty-cart{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img{
    width: 90px;
    height: 90px;
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
